Abstract
We consider MIMO schemes with Nt transmit and Nr receive antennas using BPSK modulation in quasistatic fading. We show that space-time (ST) bit-interleaving coded-modulation (BICM) approaches mapping binary codes to BPSK ST codes show a loss over coded-modulation (CM) MIMO capacity. This is despite the use of an optimal inner detector and is illustrated using capacity CDFs for the CM and ST-BICM cases. The CDFs are translated to plots of outage probabilities as functions of SNR. For capacity-achieving schemes, these indicate that SNR losses of ST-BICM over CM approaches decrease with Nr and increase with Nt. Finally, we amend our method for where the outer binary code is only capacity-approaching we find this provides accurate predictions of FERs for ST-BICM using an outer turbo code.
Original language | English |
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Pages | 2299-2302 |
Number of pages | 4 |
Publication status | Published - 2004 |
Event | 2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2004 - Barcelona, Spain Duration: 5 Sept 2004 → 8 Sept 2004 |
Conference
Conference | 2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2004 |
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Country/Territory | Spain |
City | Barcelona |
Period | 5/09/04 → 8/09/04 |
Keywords
- Bit-interleaving
- Channel capacity
- Iterative decoding
- MIMO
- Space-time coding
- Turbo codes